aorta, coarctation of the
- Congenital disorder involving narrowing of a short section of the aorta's arch over the heart.It causes a characteristic murmur, abnormally high blood pressure in the arms, and reduced blood flow to the abdomen, pelvis, and legs. It increases the workload of the left ventricle, which usually becomes enlarged. Surgical reconstruction or replacement (depending on the person's age) of the narrowed area is most effective in the young.
* * *congenital malformation involving the constriction, or narrowing, of a short section of that portion of the aorta that arches over the heart. The aorta is the principal artery conducting blood from the heart into the systemic circulation. The partial obstruction of the aortic channel causes a characteristic murmur and causes abnormally high blood pressure in the arms. The left ventricle (lower chamber of the heart) is usually enlarged. Blood flow to the abdomen, pelvis, and legs is reduced. Intercostal (between-the-ribs) branches from the aorta enlarge and cause characteristic notching of the ribs.Treatment of the defect is surgical and varies with the age of the person affected. In infants the artery that supplies the left arm is tied, divided, and used as a flap to repair the narrowed aortic area. In children and adolescents the narrow section of the aorta is removed, and the two free ends are sewn together. In older persons, either the constricted section of artery is replaced with a section of tubing made from a synthetic fibre such as Dacron™, or the defect is left but is bypassed by a Dacron™ tube opening into the aorta on either side of the defect—a permanent bypass for the blood flow. Surgery for this condition is most effective in young persons and is rarely performed on patients over the age of 50.
* * *
Look at other dictionaries:
Coarctation of the aorta — Aortic coarctation Classification and external resources ICD 10 Q25.1 ICD 9 747.10 … Wikipedia
Coarctation of the aorta — A congenital constriction of the aorta, impeding the flow of blood below the level of the constriction and increasing blood pressure above the constriction. Symptoms may not be evident at birth but may develop as soon as the first week after… … Medical dictionary
Коарктация (Аорты) (Coarctation (Of The Aorta)) — врожденное сужение какого либо короткого участка аорты. Наиболее характерным местом коарктации является участок ниже отхождения от аорты левой подключичной артерии. Это приводит к повышению кровяного давления (гипертензии) в голове и руках и к… … Медицинские термины
Coarctation De L'aorte — Coeur normal La coarctation de l aorte n est pas, stricto sensu, une cardiopathie congénitale bien que très souvent traitée dans ce type de pathologie. Il s agit d un rétrécissement congénital de l aorte se situant à l embouchure du canal… … Wikipédia en Français
Aorta — The largest artery in the body, the aorta arises from the left ventricle of the heart, goes up (ascends) a little ways, bends over (arches), then goes down (descends) through the chest and through the abdomen to where ends by dividing into two… … Medical dictionary
coarctation of aorta infantile type — coarctation of the aorta in which there is cyanosis and diffuse involvement of the aortic isthmus; it is usually seen in infants and is associated with other anomalies such as a patent ductus … Medical dictionary
Coarctation de l'aorte — Cœur normal La coarctation de l aorte est un rétrécissement congénital de l aorte, situé juste en dessous de l émergence de l artère sous clavière gauche, marquant le début de l aorte thoracique descendante. Sommaire … Wikipédia en Français
Coarctation — A narrowing, a stricture, a constriction. Although the best known coarctation is of the aorta, any artery can have a coarctation. The word “coarctation” comes from the Latin “coartare” meaning :to press together.” The sides of the vessel at the… … Medical dictionary
Aorta — The aorta (pronounced IPA|/e(ɪ)ˈo(ʊ)ɹ.tə/) is the largest artery in the human body, originating from the left ventricle of the heart and bringing oxygenated blood to all parts of the body in the systemic circulation. [cite book last = Maton first … Wikipedia
coarctation — n. (of the aorta) a congenital narrowing of a short segment of the aorta. The most common site of coarctation is just beyond the origin of the left subclavian artery from the aorta. This results in high blood pressure (hypertension) in the upper… … The new mediacal dictionary